#include <iostream>

#include "MathFunctions.h"

// include the generated table
#include "Table.h"

namespace mathfunctions {
    namespace detail {
// a hack square root calculation using simple operations
        double mysqrt(double x)
        {
            if (x <= 0) {
                return 0;
            }

            // use the table to help find an initial value
            double result = x;
            if (x >= 1 && x < 10) {
                std::cout << "Use the table to help find an initial value " << std::endl;
                result = sqrtTable[static_cast<int>(x)];
            }

            // do ten iterations
            for (int i = 0; i < 10; ++i) {
                if (result <= 0) {
                    result = 0.1;
                }
                double delta = x - (result * result);
                result = result + 0.5 * delta / result;
                std::cout << "Computing sqrt of " << x << " to be " << result << std::endl;
            }

            return result;
        }
    }
}